<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-24 -297 18:10:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="14.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 44 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 45% PACIFIC flags: F2x cusp not found, Multiple candidates for F2o cusp, One of F2 cusps was derived from the other, Unidentified traces above foF2</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.10.24 (297) 18:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202629710241810009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="10.900" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.592" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="28.253" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="9.350" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="9.350" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="11.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="445.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="445.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.450" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.900" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="455.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="2.896" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="9.350" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="9.350" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="357.088" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="239.130" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.193" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="160.470" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="54.346" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="86.583" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="175.440" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.780" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="32">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8 9.85 9.9 9.95 10.0 10.05 10.1 10.15 10.2 10.25 10.3 10.35 10.4 10.45 10.5 10.55 10.6 10.65 10.7 10.75 10.8 10.85 10.9
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
445.000 445.000 450.000 450.000 450.000 455.000 455.000 455.000 455.000 455.000 455.000 455.000 460.714 466.429 472.143 477.857 483.571 489.286 495.000 499.646 504.836 510.673 517.284 524.836 533.544 543.696 555.684 570.054 587.595 609.489 637.582 674.943
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
51 57 48 54 57 45 0 57 57 0 0 0 0 0 45 51 48 48 51 54 54 54 51 51 45 0 0 0 0 0 0 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -2.734375 -2.734375 -1.171875 -1.171875 1.171875 -1.171875
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.564 90.0 95.0 100.0 105.0 110.0 113.689 115.0 117.378 120.0 121.067 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 357.088 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.946 2.507 2.802 2.896 2.774 2.774 2.774 2.861 2.896 3.028 3.197 3.368 3.543 3.724 3.91 4.102 4.301 4.505 4.714 4.928 5.146 5.366 5.588 5.81 6.033 6.254 6.474 6.692 6.908 7.121 7.331 7.539 7.743 7.944 8.142 8.336 8.527 8.714 8.897 9.077 9.252 9.422 9.587 9.747 9.901 10.047 10.186 10.316 10.437 10.546 10.643 10.726 10.795 10.847 10.882 10.898 10.9 10.899 10.891 10.877 10.856 10.83 10.797 10.759 10.715 10.666 10.612 10.554 10.492 10.425 10.354 10.28 10.203 10.122 10.038 9.952 9.863 9.771 9.678 9.582 9.485 9.386 9.286 9.184 9.081 8.978 8.873 8.768 8.662 8.555 8.448 8.341 8.233 8.126 8.019 7.911 7.804 7.697 7.59 7.484 7.378 7.273 7.168 7.064 6.961 6.858 6.756 6.655 6.555 6.455 6.357 6.259 6.162 6.067 5.972 5.878 5.785 5.694 5.603 5.513 5.425 5.337 5.251 5.165 5.081 4.998 4.916 4.835 4.755 4.676 4.599 4.522 4.446 4.372 4.299 4.226 4.155 4.085 4.016 3.947 3.88 3.814 3.749 3.685 3.622 3.56 3.499 3.439 3.379 3.321 3.264 3.207 3.152 3.097 3.043 2.991 2.939 2.887 2.837 2.788 2.739 2.691 2.644 2.598 2.552 2.508 2.464 2.42 2.378 2.336 2.295 2.255 2.215 2.176 2.138 2.1 2.063 2.026 1.991 1.955 1.921 1.887 1.854 1.821 1.788 1.757

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.896" PeakHeight="110.0" Num="3" Error="0.0">
-30.106 12.572 -2.902
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.896" EndFrequency="10.9" PeakHeight="357.088" Num="5" zHalfNm="239.13" Error="2.279">
-227.483 -14.459 9.171 -4.574 1.324
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.067" Depth="0.122"/>
<TopsideChapman PeakHeight="357.088" PeakDensity="1474069.5" PeakScaleHeight="86.583" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
